Error Handling In ASP.NET

 Add in web config use statuscode for redirect to another page when error/exception

occur on page.

<system.webServer>
  <httpErrors errorMode="Custom" existingResponse="Replace">
    <remove statusCode="404"/>
    <remove statusCode="500"/>
    <error statusCode="404" responseMode="ExecuteURL"
    path="/Pages/Public/Error404.aspx"/>
    <error statusCode="500" responseMode="ExecuteURL"
    path="/Pages/Public/Error500.aspx"/>
  </httpErrors>
</system.webServer>

NOTE : And Other method i think u know like try catch method...